Moment Load on Revolute Joint exposes a Mechanical bug

- December 5, 2021 at 10:27 pm
  
  peteroznewman
  Subscriber
  
  An ANSYS 2021R2 Static Structural analysis of a rectangular tube with a Revolute Joint Moment Load at each end.
- December 6, 2021 at 1:59 am
  
  tumulpurwar
  Subscriber
  
  Thanks peter for correct solution, I will try to simulate by this way which you told.
  Thanks
- March 28, 2022 at 4:09 am
  
  tumulpurwar
  Subscriber
  
  Hey peter, its your old post offcourse..why we cant apply just "Moment" scoped to Remote point under load tab in Ansys Mechanical instead of "Joint" scoped or not scoped to remote point?
  
  Is it possible in "Joint" we can apply moment about two axis at the same time?
  One More question, if instead of applying "joint moment" on both ends, applying "joint moment" at one end & "Fixed support scoped to Remote point" at other, will it will produce same correct results like that of former?
- March 28, 2022 at 11:19 am
  
  peteroznewman
  Subscriber
  
  First you would have to change the joint type to one that has two axes because a Revolute joint has only one axis. Try a Universal Joint. Then see if you can apply a Joint Load about two axes. I don't know.
  Alternatively, you can definitely put two Revolute Joints in series and have a dummy body between them.
  Below is an illustration of a beam with one end fixed and the other end with a Revolute Joint plus a Joint Moment and a beam with a Revolute Joint on each end with opposite joint moments applied.
  The deformation along the length is clearly not the same. But as long as the Revolute Joint at each end had the Behavior set to Rigid, then the stress along the length would be the same for small deflections. You have asked this question many times. What did you think the answer was?
- March 28, 2022 at 12:50 pm
  
  tumulpurwar
  Subscriber
  
  Hello peter..thanks for reply.
  
  To your question "What did you think the answer was?"......If we take case of cantiliver, we will apply one end.."joint moment" other end "remote displacement with RZ= 0" OR fixed support scoped to Remote point, if we want to see bending along length of hull (in x direction). if i am not interested in physically seeing the bending of my hull structure, than i can let RZ Free on remote displacement.
  
  I hope i am correct?
  
  Thanks